Improvement in churns



1. COOPER.

v r Chum. No. 56,340. Patented July 10, 1866.

N. PET

' UNITED STATES PATENT OFFICE.

JOHN COOPER, OF DUBLIN, INDIANA.

IMPROVEMENT IN CHURNS.

Specification forming part of Letters Patent No. 56,340, dated July 10,1866.

To all whom it may concern Be it known that I, JOHN COOPER, of Dublin,Wayne county, and State of Indiana, have invented a new and usefulImprovement in Chorus; and I do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe annexed drawings, made part of this specification, in which- Figure1 is an isometrical projection of my improved churn, a part of the boxbeing represented as broken away to show the internal construction; andFig. 2 is a cross-section, showing the mode of arranging the beatersinthe box. 5

A is the box, the size of which is dependent upon the amount of workrequired to be perormed. The bottom of this box is curved, forming theare of a circle the radius of which is longer than that of the circledescribed by the beaters by, say, one-fourth or one-third.

B is a crank-handle attached to the spur- Wheel 0, which is geared intothe pinion D, multiplying motion as may be desired.

The pinion D is keyed to the end of the shaft E, which passes throughthe side of the churn with suitable boxes. The other end of the shaft isattached to the opposite side of the churn in any suitable manner, so asto turn freely on its bearings. To this shaft are attached the beaters FF, which are bent bows of wood, shaped as shown in the drawings. Thesebows I dispose spirally on the shaft, those on one side being placedopposite to the spaces between those on the opposite side. This shapeand disposition of the heaters is not essential, though I regard it asthe best.

The bent exterior ends of the heaters are intended to facilitate thefreeing of the particles of butter that adhere to the heaters. I havefound that this adhesion seriously impairs the proper working ofstraight spikeformed beaters, and have therefore adopted the bow-formedbeaters shown, or single ones curved at the point, which to some extentwill act in the same manner.

The shaft E is not placed in the middle of the box, but set to one side,so as just to clear the curved bottom on that side and leave a space onthe other, in which the particles of butter are accumulated andgradually formed into a roll, which will be turned with every revolutionof the shaft, until finally, when the work is completed by the perfectseparation of the butter from the milk, it will be found to have beenfully collected in this well-worked roll at one side, and it is onlynecessary to draw off the milk, leaving the butter in a single mass.

Having fully described my improvements, what I claim as my invention,and seek to secure by Letters Patent, is-

The bowed or bent beaters F, when constructed and arranged substantiallyas and for the purpose set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS C. BERRYHILL, G. W. WITT.

